Details

Autor(en) / Beteiligte

• Fielding, Drummond B.
• McKee, Christopher F.
• Socrates, Aristotle
• Cunningham, Andrew J.
• Klein, Richard I.

Titel

The turbulent origin of spin–orbit misalignment in planetary systems

Ist Teil von

• Monthly notices of the Royal Astronomical Society, 2015-07, Vol.450 (3), p.3306-3318

Ort / Verlag

London: Oxford University Press

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The turbulent environment from which stars form may lead to misalignment between the stellar spin and the remnant protoplanetary disc. By using hydrodynamic and magnetohydrodynamic simulations, we demonstrate that a wide range of stellar obliquities may be produced as a by-product of forming a star within a turbulent environment. We present a simple semi-analytic model that reveals this connection between the turbulent motions and the orientation of a star and its disc. Our results are consistent with the observed obliquity distribution of hot Jupiters. Migration of misaligned hot Jupiters may, therefore, be due to tidal dissipation in the disc, rather than tidal dissipation of the star–planet interaction.